221results about How to "Improve dye uptake" patented technology

The invention relates to a cation modified dyeing method of ceiba fiber textiles, which comprises the following steps: immerging the ceiba fiber textiles into a cation modifying agent solution after alkali treatment and bleaching; carrying out cationization modifying treatment for 20 to 60 min; carrying out water washing and baking; then, carrying out dyeing treatment by anionic dyestuff; and next, obtaining products through water washing and baking. Compared with the prior art, the invention adopts the cation modified ceiba fiber method so that the fiber modified by cations has positive charges, the bonding force of anionic dyestuff and the fiber is enhanced through the effect of Coulomb attraction, and the adsorption on dyestuff anions is enhanced. Thereby, the invention improves the dye uptake of the dyestuff, shortens the dyeing time, and saves water and auxiliary agents, and in addition, the salt consumption can be reduced, or even the salt-free dyeing can be realized. In addition, both the water washing fastness and the light fastness of dyeing textiles are improved.

The invention relates to a method for improving the dye depth of cellulose fiber fabrics by using chitosan. In the method, a polycarboxylic acid solution is used as a solvent and a cross-linking agent of chitosan and epoxy chloropropane is used as a cross-linking agent, and chitosan is covalently grafted to the surface of the cellulose fiber fabrics through padding, preliminary drying and baking at a high temperature. The combining strength of chitosan and the cellulose fiber fabrics is increased greatly, the electrostatic repulsion between the cellulose fiber fabrics and anionic dyes is reduced, the dye-uptake of dyes and the color depth of the fabrics are improved obviously, and the crease resistance of the cellulose fiber fabrics processed by using the method is improved obviously.

The invention relates to an ecological dyeing method for dyeing a cotton fabric with mulberry red natural dye, comprising the following steps: preprocessing the cotton fabric and then dyeing the preprocessed cotton fabric with the mulberry red natural dye; adding metal salt for fixation; and soaping the fabric after fixation and then fixing colors to obtain the dyed fabric with even color, wherein washing fastness can reach 3-4degrees. The ecological dyeing method has simple dyeing process, high dye-uptake, good pigment stability and wide market prospect.

This invention discloses a dyeing kettle of the over-critical carbon-dioxide dyeing device, which is to use for the dyeing of the textile, including arranging the barrel and the sealed convex shoulder flat that is on the upper part of the barrel; the center opening of the barrel's bottom connects with the first connector, the inside center opening of barrel connects with the inner barrel by the support cell; the wall of the inner barrel is arranged with the filter hole uniformly, the upper of the inner barrel connects with the second cover; the barrel wall opening of the barrel's upper connects with the second connector; the under part of the barrel connects with the nip cover, which has the ring space with the barrel, and the upper of the ring space is sealed in the protruding stage that outside the barrel, and the first cover is sealed in the under part, one side of the ring space's under part opening connects with the first adapter, and the other side of upper part opening connects with the second adapter. This invention realizes the combining of the technology of the textile internal dyeing and external dyeing, and the dynamic dyeing in the over-critical dyeing method.

The invention provides a method for modifying cotton and long vegetable fiber or yarn by ammonia liquid, which comprises the following steps: firstly, drying pre-treatment of raw materials; secondly, ammonia leaching of the raw materials in a hermetical treatment tank; thirdly, spin-drying of the raw materials subjected to ammonia leaching when a creel is twirled; fourthly, drying of the raw materials subjected to spin-drying by ammonia flow when the creel rotates slowly; fifthly, flushing of the raw materials which are dried by the ammonia flow by airflow when the creel rotates slowly; and so on. The method keeps the inherent advantages of the cotton, the long vegetable fiber and the yarn, overcomes the defects of the cotton, the long vegetable fiber and the yarn, increases softness, crimp tendency and fluffiness of the cotton, the long vegetable fiber and the yarn, improves the dye-uptake rate, the leveling property and the showy dye level, and further solves the problems of energy conservation, efficiency improvement and environmental protection.

An environmental protection type composite disperse gray dye with high dye uptake, fastness, reproducibility and sublimation fastness contains proportionally dye monomers A, B and C and assistant.

The invention relates to a hair dye, especially a natural plant hair dye. Wherein, it is formed by mixed A and B solutions; A agent is formed by agent and metal chelant, while the agent can be guar gum, polyquaternary ammonium salt or glycol cellulose, and the chelant can be soluble ferric salt or ferrous salt; B agent contains pomegranate bark extractive and glycol cellulose; while it also can contain logwood extractive as color agent. The invention has short dye time, uniform dye and washing resistance, nearly without side effects.

The invention discloses a dyeing process of a pure cotton fabric, which comprises the following steps: a. taking one mass part of pure cotton fabric to be dyed; b. grinding a powdery reactive dye occupying 2-8% of the total mass of the fabric in a ball grinding mill for 2h, adding ethanol and grinding for 1h, wherein the mass of ethanol is nine times of that of the powdery reactive dye; c. adding decamethylcyclopentasiloxane, high-speed cutting for 5min at a rotating speed of 600r/min, and preparing a powdery reactive dye/decamethylcyclopentasiloxane suspension system, wherein the mass of the decamethylcyclopentasiloxane is 50 times of the total mass of the fabric; d. pretreating the pure cotton fabric to be dyed in an alkali solution of 1-130g/L so as to enable the pure cotton fabric tofully swell, and controlling the fabric liquid carrying rate to be 100-220% through a rolling machine; and e. immersing the treated fabric into the powdery reactive dye/decamethylcyclopentasiloxane suspension system, dyeing for 40min at normal temperature, slowly rising the temperature to 70-110 DEG C within 15min, fixing color for 10-60 min at the temperature of 70-110 DEG C, and finally reducing the temperature to the normal temperature to finish dyeing. The dyeing process disclosed by the invention has the advantages of high dyeing fixation rate, environmental-protection and no pollution.

The invention relates to a compound dispersive red dye, especially relating to a polyester material printing and dyeing compound dispersive red dye, containing the following components in weight percent: monomer A 20%-45%, monomer B 5%-15% and auxiliary. It has the advantages of high dyeing ratio, good dyeing repeatability, good dyeing uniformity, excellent fastness, approach of coloured light to dispersive red S-5BL, etc.

The invention discloses a supercritical CO2 anhydrous warp beam dyeing system and a dyeing method thereof. The system comprises a CO2 pressure supply device, a circulating pump, a separation and recovery device and two or more than two dyeing kettles which are arranged in parallel, wherein the dyeing kettles are arranged in parallel and connected in series with the circulating pump to form a closed dyeing circuit; a shutoff valve is respectively arranged on both ends of the circulating pump; the CO2 pressure supply device and the separation and recovery device are connected between the shutoff valves and the dyeing kettles respectively; and an outlet of each dyeing kettle is connected with an independent recovery bypass which is communicated with the separation and recovery device and independent of the closed dyeing circuit which is formed by the dyeing kettles and the circulating pump, so that different dyeing kettles can perform dyeing and recovery of CO2 simultaneously. The system can perform dyeing and recovery of the CO2 simultaneously and respectively, reduces consumption of the CO2 to the maximum degree, reduces the cost, can realize discontinuous operation and improve the production efficiency, and has quick dyeing speed.

The invention relates to a shape dyeing process for cotton/fibers. The process is characterized in that: cone yarns and yarn beams are placed in the same yarn carrier and dyed by the following steps at the same: 1, bleaching scouring; 2, dyeing; 3, neutralizing and soaping; and 4, color fixing and smoothing treatment. The process has the advantages that: the conventional idea and mode of production is broken through and the one-bath dyeing of two kinds of yarn shapes is realized; and by using the one-bath dyeing of the yarn beams, the process flow of yarn-dyed cloth is simplified, efficiency and carrying rate are improved, a production period is shortened, simultaneously a dye uptake rate is improved, the emission of sewage and environmental pollution are reduced, a utilization rate of equipment is increased, the production dilemma caused by insufficient dyeing equipment is reduced, the cost is reduced, and the requirements on level-dyeing property, repeatability and fastness of the conventional dyeing level are met.

The invention relates to a continuous preparing method for polyether modified copolyester. The method includes mixing an ethylene glycol solution of a titanium catalyst, terephthalic acid and ethylene glycol to prepare slurry, esterifying, mixing an ethylene glycol solution of an antimony catalyst, an ethylene glycol solution of polyether and an intermediate that is bis(hydroxyethyl) terephthalate, pre-polymerizing, performing condensation polymerization, and the like. Problems that polyether macromolecules are prone to thermal degradation and are degraded into chain segments with low molecular weights at high temperature with long reaction time, and modification effects of the chain segments with low molecular weights on polyesters are weakened are overcome by the preparing method. The polyether that is a modifying agent in the prepared polyether modified copolyester is uniform in distribution and stable in molecular weight. A copolyester product is excellent and stable in performance and good in spinnability.

The invention relates to technology for dyeing and finishing real silk/corn fabric. In order to solve the technical problem, the invention provides the provided technology for dyeing and finishing which can effectively improve the dye uptake of the corn fiber and the color fastness of the fabric, and maximize the strength of the corn fiber and the fabric. The technical scheme of invention is that: the technology for dyeing and finishing the real silk/corn fabric comprises the processes of bleaching, dyeing and heat shaping in turn. The technology for dyeing and finishing the real silk/corn fabric is characterized in that: 1) the bleaching (refining) process comprises steps of pretreating, enzyme scouring, and second scouring; 2) the dyeing process comprises steps of dyeing, reduction clearing, and water washing, wherein staining solution comprises a disperse dye and a reactive dye, or the dyeing process comprises steps of disperse dye dyeing, reduction clearing, water washing, reactive dye dyeing, soap boiling and water washing; and 3) the heat shaping process comprises steps of padding soft solution and heat shaping, wherein the enzyme scouring in the bleaching process adopts neutral enzyme scouring or alkaline enzyme scouring; the staining solution of the disperse dye comprises 0 to 2 g/L of darkening agent DL-6; and the fabric dyed by the disperse dye needs to be washed by adopting acid reduction technology.

The invention relates to the field of fabrics dyeing and finishing processes, in particular to a process for dyeing fabrics by combining with plasma and ultrasonic and a special device thereof. The special device comprises low-temperature normal-pressure plasma equipment, grafting reaction equipment, ultrasonic dyeing equipment, a rinsing bath and two groups of control systems, wherein the low-temperature normal-pressure plasma equipment, the grafting reaction equipment, the rinsing bath and the ultrasonic dyeing equipment are sequentially connected, one group of control systems is connected with the low-temperature normal-pressure plasma equipment, and the other group of control systems is connected with the ultrasonic dyeing equipment. The invention organically combines the low-temperature normal-pressure plasma equipment and the ultrasonic dyeing equipment, solves the problem that the dye uptake and the dyeing quality can not improved in a process of dyeing fabrics in a high crystalline region or solves the problem of high energy consumption and high pollution in the dyeing process, and can effectively realize that the dye uptake and the dyeing quality can be improved while realizing environmental-friendly production with low energy consumption and low pollution.

The invention provides a novel dyeing method of reactive dyes. The method includes the steps of conducting preprocessing, wherein loose fiber or yarn or fabric is preprocessed; conducting dyeing, wherein the preprocessed loose fiber or yarn or fabric is dyed in the reactive dyes through a water-saving dyeing method; conducting color fixing, wherein the dyed loose fiber or yarn or fabric is directly soaked in color fixing liquid to be subjected to color fixing and is then baked so that the dyeing process of the reactive dyes can be completed. In the dyeing step, the structure of the reactive dyes at least contains three active groups. According to the technical scheme, operation is easy, no salt is used in the dyeing process, and the good dyeing and color fixing effects can be achieved with a smaller volume of water; in addition, water used in the dyeing process can be directly evaporated in the subsequent operation process, no washing operation is needed after color dyeing and fixing, and therefore no dyeing wastewater can be produced after operation is ended, and clean production is achieved.

The invention discloses a preparing method and application of natural dye of spatholobus stem, which comprises the following steps: grinding spatholobus stem; immersing in the sodium carbonate solution with pH value at 8-10 under 95-100 deg. c for 60-90min; filtering to obtain the primary liquid of natural dye; condensing the primary liquid; solidifying; grinding; obtaining the powder-shaped natural dye.

The invention discloses a reactive dye dyeing method for a cotton fabric. The reactive dye dyeing method comprises the following steps of 1 pretreating of the cotton fabric, wherein the cotton fabric is padded in a sodium carbonate solution with the concentration of 10-100 g/L, the pickup rate is controlled to be 100%-200%, and dyeing is prepared; 2 dyeing, wherein dye liquor is prepared by utilizing liquid paraffin as a continuous phase medium for dyeing, and the cotton fabric obtained in the step 1 is placed into reactive dye/a liquid paraffin bath (dye liquor) at room temperature to be dyed for 20-60 min; 3 fixation, wherein the mixture system obtained in the step 2 is heated to 50 DEG C to 100 DEG C, and heat preservation is conducted for 20-50 min; 4 soap boiling, wherein the cotton fabric is taken out, and soaping is conducted to remove the unfixed dye on the surface of the cotton fabric. According to the reactive dye dyeing method for the cotton fabric, the liquid paraffin is selected to replace water to serve as the reactive dye dyeing medium, neutral salt is not needed for accelerating dyeing in the dyeing process, the dyeing rate of the dye is high, and the fixation rate is high.

The invention discloses a manufacturing process of grass cloth. The process comprises the steps of pre-stage preparation, degumming, warp yarn preparing, weaving, bleaching, dehydrating, dyeing, finishing, and packaging. According to the invention, ramie is subjected to the degumming process by using bacillus alcalophilus, such that ramie residual gum content can be effectively reduced, product safety is improved, and cloth dye uptake can be improved. With modification upon the bleaching process, cloth color stability is ensured, and bleaching duration can be reduced, such that working efficiency can be improved. The grass cloth manufacturing process provided by the invention is advantaged in low environmental pollution, high dye uptake, high color fastness, and short dyeing duration. With the process, economic benefit can be improved. The process is suitable for industrialized productions.

The invention relates to a composite dye composition, composite disperse dye and a preparation method thereof. The composite dye composition is composed of a formula (I), a formula (II), a formula (III) and an optional formula (IV). The composite disperse dye prepared from the composite dye composition has high intensity and lifting force, and is suitable for dyeing and printing terylene and blend fabrics.

The present invention belongs to the field of nano material technology, and relates to a preparation method of polyester nano composite material for deep-dyeing fibre. It adopts nano silicon dioxide as additive modifying agent, and adopts the following steps: firstly, making it undergo the process of organic surface modification treatment, and making it be uniformly dispersed in one of polyester polymer monomer-ethylene glycol, adding the prepared nano silicon dioxide/ethylene glycol dispersing solution into reaction vessel in the process of esterification, and making them implement polymerization with polyester another monomer to obtain a polyester nano composite material, then making the polyester nano composite material undergo the process of high-temp, melt spinning treatment so as to obtain the invented polyester nano composite fibre.

The invention discloses a dyeing technique of cotton fiber cheese, the process flow of the dyeing technique of the cotton fiber cheese comprises preprocessing cotton fiber cheese in a main vat, dyeing and finally processing in turn. The invention is characterized in that in the upper flow process, when water gets into the main vat, water-inlet water level in the main vat is located on one second to two thirds of the total height of stacking of the cheese in the main vat, and water level control model of water inlet adopts a continuous way, dyeing process adopts a salt pre-adding technique, namely anhydrous sodium sulfate is firstly added, and dyeing is followed. Since the invention changes the original dye with full vat of water to a no full vat of water, and the water level control way of water inlet adopts a continuous way, salt pre-adding technique is adopted in the dyeing process, therefore, the invention can reduce energy consumption, improve rate of dye-up-take of dye, lower sewage treatment cost, and reduce the pollution to environment, and the working properties are excellent.

The invention discloses a preparation method of a liquid plant dye, comprising the following steps of: firstly selecting plant materials, crushing, then adding fermenting strain and alcohol solution for fermentation, extracting the obtained solution, reducing pressure, concentrating, distilling, preparing dye concentrated solution, adding an auxiliary agent in the dye concentrated solution and preparing liquid dye. The invention has rich resource of utilized plants and simple preparation method, and does not cause pollution of chemical synthetic dye to the environment in the preparation process; the prepared dye has natural and elegant color, does not have hazardous effect on human body, is applied to clean production in the textile industry and can be produced in large scale; and based on the traditional process, the invention adopts modern means and improves the extraction process so as to facilitate the storage and transportation.

The invention discloses a polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology. The technology comprises the steps of: S1, polyester dyeing: dipping a to-be-dyed polyester-cotton fabric in a dye solution containing microcapsule disperse dye, conducting heat preservation at 65-75DEG C, then performing heat preservation at 110-130DEG C, and carrying out cooling to 30-40DEG C, using chitosan to serve as the carrier of the disperse dye, and then conducting crosslinking curing; S2. cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, carrying out stirring reaction, then adding a reactive dye, performing heat preservation at 55-65DEG C, adding an organic solvent, conducting heat preservation at 70-90DEG C, then adding organic amine and sodium carbonate, and performing heat preservation at 60-100DEG C; and S3, aftertreatment: performing cooling to room temperature, and then carrying out primary washing, soaping and after-washing. The polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology provided by the invention has the advantages of simple process, little pollution, wide dye applicability, uniform coloring, high color fixation rate and good level-dyeing properties.

The invention discloses a dyeing and finishing process of polyester and cotton blended fiber fabric. The process comprises pretreatment, presetting, modification treatment, dyeing, mordant removal, soaping, color fixing, after finishing, drying, sizing, calendaring and rolling. Snailase and alpha-amylase are adopted for pretreatment, modification treatment is adopted before dyeing, the polyester and cotton blended fabric is modified fundamentally, and the dye-uptake of the fabric is increased; in the dyeing procedure, fewer alkaline substances and inorganic salt are used, a dye leveler, substitution alkali, a migration inhibitor and a diffusant are added, the dye leveling performance is improved, natural dye is used, environmental pollution is avoided, and the environment-friendly requirement is met; self-cleaning treatment is added during aftertreatment, and the self-cleaning capacity, the crease-resistant performance, the wash durability and color fastness are improved; silk fibroin and sericin are adopted for afterfinish, and the anti-pilling performance and the antistatic performance of the fabric are provided; the whole process is environment-friendly and pollution-free.

The invention discloses a wooden sheet dyeing method for performing pretreatment by using cold plasma. The process comprises the following steps of: adjusting the water content of a wooden sheet to be 2-12 percent; placing on a feed conveying belt of a cold plasma treatment system; adjusting a space between two electrode rollers to keep the gap between the surface of the wooden sheet and an electrode at 0.5-1.5mm; starting a power supply; adjusting treatment power to be 1-6kW to produce cold plasma through dielectric barrier discharge of working gas between two electrodes; passing the wooden sheet through four pairs of discharge electrode rollers at a speed of 2-20m/min to simultaneously treat two surfaces of the wooden sheet, wherein the working gas between the two pairs of front electrode rollers is air and the working gas between the two pairs of rear electrode rollers is ammonia gas; and immersing the pretreated wooden sheet in direct dye solution for dyeing, and then washing and drying to obtain a dyed wooden sheet. The wooden sheet pretreated by cold plasma has high dyeing speed, high dye uptake and superior light resistance. In addition, the method has the advantages of energy conservation, environmental friendliness, easiness and convenience in operation, high efficiency and capability of continuous working.

The invention relates to a chief value of cotton (CVC) and hemp-woven fabric and a production method thereof. In warp yarns of the fabric, 100/2<S> CVC 60/40 is adopted, and in weft yarns of the fabric, 36<s> 100 percent hemp is adopted; and the density of the warp yarns is 144/inch, the density of the weft yarns is 70/inch, and the width is 57/58. The production method comprises the following processes of: 1, dyeing a bobbin; 2, weaving; and 3, performing after treatment, wherein in the after treatment, singeing is performed twice on front and reverse sides, and the after treatment comprisesthe following processes of: singeing, desizing, mercerizing, singeing, performing liquid ammonia treatment, performing non-ironing treatment, baking, washing, stentering after washing and preshrinking. The CVC and hemp-woven fabric has the high functions of mildew prevention, bacterial resistance, radiation resistance and ultraviolet resistance without adding chemical aids, and has the high moisture absorption, ventilation property and wrinkle resistance.

The invention discloses a dyeing and finishing process for modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment, dyeing, soaping, fixation, after-finishing, drying, sizing, calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the dyeing procedure, a base substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental pollution is avoided, and the requirement of green environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high. According to the invention, a yellowing-resisting reagent is used in the procedures of pre-setting, sizing and after-finishing, so that the final fabric cannot become yellow easily.

The preparation process of the dyeing additive includes the ester exchange reaction of 5-sodium sulfodimethyl isophthalate and glycol in the presence of catalyst to obtain 5-sodium sulfodihydroxyethyl isophthalate; the esterification reaction of terephthalic acid and glycol in the presence of catalyst and stabilizer to obtain dihydroxyethyl terephthalate; the pre-polycondensation of 5-sodium sulfodihydroxyethyl isophthalate and dihydroxyethyl terephthalate at 210-240 deg.c; the polycondensation of the reactant system at 240-290 deg.c and vacuum degree lower than 100 Pa and final casting and pelletizing to obtain the additive product. The additive product has high 5-sodium sulfodimethyl isophthalate content and may be used in mixing melt spinning process to produce dyeable polypropylene fiber capable of being dyed with cationic dye in high dyeing degree.

The invention discloses a textile finishing method. The textile finishing method comprises the following steps: padding a textile; steaming; washing with water; drying; obtaining a finished product. An environmental-friendly textile finishing agent adopted by the textile padding step is prepared from the following components in parts by weight: 1.5 to 11 parts of a thickener, 0 to 10 parts of natural dyestuff, 0 to 4 parts of a color fixing agent, 0 to 3 parts of a functional finishing auxiliary agent and 80 to 90 parts of water, wherein the thickener is one or more of radix puerariae powder, cassava starch and sodium polyacrylate. The environment-friendly textile finishing agent provided by the invention has a good moisture-keeping property and poor flowability; the environment-friendly textile finishing agent does not easily permeate and lose when being coated on the surface of a textile; the environment-friendly textile finishing agent adopted by the textile finishing method does not need to be reconstructed for a plurality of times; a process is simple and the production cost is saved.

The invention discloses a chemical structure modification-based water-soluble curcumin dye. The invention also discloses a preparation method of the chemical structure modification-based water-soluble curcumin dye. The preparation method comprises the following steps: reacting curcumin with 1,2-dibromoethane, and reacting the above obtained product with triethylamine to obtain the chemical structure modification-based water-soluble curcumin dye. The invention also discloses an application method of the chemical structure modification-based water-soluble curcumin dye. The dye can be directly used for dyeing unmodified cotton fabrics without a dyeing accelerant, a dye leveler or a dye mordant, so the environmental protection property of a dyeing process and the safety of the fabric are improved. All dyeing indexes, especially the indexes comprising the washing color fastness and the like of the water-soluble dye are obviously better than that of natural curcumin for direct dyeing, wherein the washing color fastness reaches 3 level, the staining fastness reaches 5 level, and each of the dry crock fastness and the wet crock fastness reaches 5 level.